"I always remembered the idea of Marshall Mathers and Eminem when he did 'Stan' - he was writing a letter," Murs told 4Music.

"That was one of the ideas we had for this song. We said, 'The song should be called 'Dear Darlin'' and it should be the start of writing a letter, that would be so cool'."

He added: "This song was kind of a way of showing people that you don't have to text or tweet or Facebook. The old-school way of doing things is writing letters and I used to write letters to my girlfriends."